<!DOCTYPE html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<link rel="stylesheet" href="css/bootstrap.min.css">
	<title>Document</title>
</head>
<body>
	<form action="" role="form">
		
		<div class="form-group has-warning has-feedback ">
			<label for="">用户</label>
			<input class="form-control" type="text" name="" id="">
			<span class="glyphicon glyphicon-ok form-control-feedback" aria-hidden="true"></span>
		</div>
		<div class="form-group has-success has-feedback ">
			<label for="">用户</label>
			<input class="form-control" type="text" name="" id="">
			<span class="glyphicon glyphicon-ok form-control-feedback" aria-hidden="true"></span>
		<div class="form-group has-error">
			<label for="">用户</label>
			<input class="form-control" type="text" name="" id="">
		</div>
	</form>
</body>
</html>